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CVE-2025-21916— usb: atm: cxacru: fix a flaw in existing endpoint checks

EPSS 0.03% · P8

Affected Version Matrix 20

VendorProductVersion RangeStatus
LinuxLinux23926d316d2836315cb113569f91393266eb5b47< dcd592ab9dd8a2bfc36e75583b9006db2a77ec24affected
75ddbf776dd04a09fb9e5267ead5d0c989f84506< 319529e0356bd904528c64647725a2272d297c83affected
1aac4be1aaa5177506219f01dce5e29194e5e95a< bf4409f84023b52b5e9b36c0a071a121eee42138affected
5584c776a1af7807ca815ee6265f2c1429fc5727< 197e78076c5ecd895f109158c4ea2954b9919af6affected
f536f09eb45e4de8d1b9accee9d992aa1846f1d4< a0475a885d69849b1ade38add6d64338dfa83a8faffected
2eabb655a968b862bc0c31629a09f0fbf3c80d51< cfc295f7cccf66cbd5123416bcf1bee2e1bd37deaffected
2eabb655a968b862bc0c31629a09f0fbf3c80d51< 903b80c21458bb1e34c3a78c5fdc553821e357f8affected
2eabb655a968b862bc0c31629a09f0fbf3c80d51< c90aad369899a607cfbc002bebeafd51e31900cdaffected
… +12 more rows
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I. Basic Information for CVE-2025-21916

Vulnerability Information
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Vulnerability Title
usb: atm: cxacru: fix a flaw in existing endpoint checks
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: atm: cxacru: fix a flaw in existing endpoint checks Syzbot once again identified a flaw in usb endpoint checking, see [1]. This time the issue stems from a commit authored by me (2eabb655a968 ("usb: atm: cxacru: fix endpoint checking in cxacru_bind()")). While using usb_find_common_endpoints() may usually be enough to discard devices with wrong endpoints, in this case one needs more than just finding and identifying the sufficient number of endpoints of correct types - one needs to check the endpoint's address as well. Since cxacru_bind() fills URBs with CXACRU_EP_CMD address in mind, switch the endpoint verification approach to usb_check_XXX_endpoints() instead to fix incomplete ep testing. [1] Syzbot report: usb 5-1: BOGUS urb xfer, pipe 3 != type 1 WARNING: CPU: 0 PID: 1378 at drivers/usb/core/urb.c:504 usb_submit_urb+0xc4e/0x18c0 drivers/usb/core/urb.c:503 ... RIP: 0010:usb_submit_urb+0xc4e/0x18c0 drivers/usb/core/urb.c:503 ... Call Trace: <TASK> cxacru_cm+0x3c8/0xe50 drivers/usb/atm/cxacru.c:649 cxacru_card_status drivers/usb/atm/cxacru.c:760 [inline] cxacru_bind+0xcf9/0x1150 drivers/usb/atm/cxacru.c:1223 usbatm_usb_probe+0x314/0x1d30 drivers/usb/atm/usbatm.c:1058 cxacru_usb_probe+0x184/0x220 drivers/usb/atm/cxacru.c:1377 usb_probe_interface+0x641/0xbb0 drivers/usb/core/driver.c:396 really_probe+0x2b9/0xad0 drivers/base/dd.c:658 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800 driver_probe_device+0x50/0x430 drivers/base/dd.c:830 ...
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确验证USB端点地址。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 23926d316d2836315cb113569f91393266eb5b47 ~ dcd592ab9dd8a2bfc36e75583b9006db2a77ec24 -
LinuxLinux 6.10 -

II. Public POCs for CVE-2025-21916

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III. Intelligence Information for CVE-2025-21916

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Same Patch Batch · Linux · 2025-04-01 · 93 CVEs total

CVE-2025-219478.1 HIGHksmbd: fix type confusion via race condition when using ipc_msg_send_request
CVE-2025-21926net: gso: fix ownership in __udp_gso_segment
CVE-2025-21932mm: abort vma_modify() on merge out of memory failure
CVE-2025-21935rapidio: add check for rio_add_net() in rio_scan_alloc_net()
CVE-2025-21937Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name()
CVE-2025-21936Bluetooth: Add check for mgmt_alloc_skb() in mgmt_device_connected()
CVE-2025-21939drm/xe/hmm: Don't dereference struct page pointers without notifier lock
CVE-2025-21938mptcp: fix 'scheduling while atomic' in mptcp_pm_nl_append_new_local_addr
CVE-2025-21934rapidio: fix an API misues when rio_add_net() fails
CVE-2025-21928HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove()
CVE-2025-21927nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu()
CVE-2025-21929HID: intel-ish-hid: Fix use-after-free issue in hid_ishtp_cl_remove()
CVE-2025-21925llc: do not use skb_get() before dev_queue_xmit()
CVE-2025-21924net: hns3: make sure ptp clock is unregister and freed if hclge_ptp_get_cycle returns an e
CVE-2025-21922ppp: Fix KMSAN uninit-value warning with bpf
CVE-2025-21923HID: hid-steam: Fix use-after-free when detaching device
CVE-2025-21920vlan: enforce underlying device type
CVE-2025-21921net: ethtool: netlink: Allow NULL nlattrs when getting a phy_device
CVE-2025-21919sched/fair: Fix potential memory corruption in child_cfs_rq_on_list
CVE-2025-21918usb: typec: ucsi: Fix NULL pointer access

Showing top 20 of 93 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21916

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